The Post Falls Earth Dike, located in Idaho along the Spokane River, serves as a vital structure for hydroelectric power generation and other purposes such as fish and wildlife conservation, recreation, and water management. Built in 1990, this earth dam stands at a height of 15.6 feet and has a storage capacity of 225,000 acre-feet, ensuring crucial water resource management for the surrounding area.

Managed by a private entity, the Post Falls Earth Dike is regulated and inspected by various state and federal agencies, including the Idaho Department of Water Resources and the Federal Energy Regulatory Commission. With a high hazard potential due to its location and purpose, the dam's safety and maintenance are closely monitored to prevent any potential risks or emergencies. Despite its critical role in water resource management, the dam lacks certain features such as a spillway, emphasizing the need for ongoing assessment and risk management measures.

For water resource and climate enthusiasts, the Post Falls Earth Dike presents a fascinating case study in sustainable infrastructure development and management. Its incorporation of various purposes, from hydroelectric power to wildlife conservation, highlights the importance of balancing human needs with environmental considerations. As technology and regulations evolve, ensuring the safety and efficiency of structures like the Post Falls Earth Dike will be crucial in safeguarding water resources and ecosystems for future generations.